Improvement in grindstone-journal box



@natal ,esta

@wat dtiijrr.

THOMAS WBROWN, or READING, PENNSYLVANIA.

Letters Patent No. 91,514,4dated .Time 22, 1869.

To all persons to whom. these presents may come Be it known that I, THoMAs `W. BROWN, of Reading, of the county of Berks, and State of Pennsylvania,

have invented an Improved Grindstone-.Iournal Box;

and do hereby declare the same to be fully described in the following specification, and representedin the accompanying drawings, of which- Figure l is a top view,

Figure 2, a side elevation,

Figure 3, a'longitndinal section of it.

Figure 4 is a top view of it as it appears with its cover raised.

Figure 5 is a transverse section of it taken through the journals of one of its friction-wheels.

On October 16, 1866, Letters Patent, No. 58,768, were granted to me on a grindstone-journal box.

My present box, like that on which Vthe patent was granted, contains two friction-rollers, on and between the peripheries of which thelgrindstone-journal, when supported by and'arranged in the box, immediately rests.

It is well known to be of great importanceto protect both the circumferences, the` journals, and -bearings of each of the friction-rollers, from water and sand, or grit thrown ofil by the grindstone while in use, otherwise the rollers and their journals, as well as the journal of the grindstone, would soon become worn or seriously impaired by such.

My patented box contained provision forse protecting the friction-wheels, their journals, andjhearings, as well as the grindstone-journah when supported by the said wheels.

This is also the case lwith my presentbox, but in the latter I have made an important improvement,

which consists in arranging the friction-wheel journals, and bearings,'andV abutments, wholly within the oil or wheel-chamber, and underneath its' cap or cover.

My patented box,as above referred to, was furnished with wheel-journal caps, combined with the cover, and projected from its opposite outer sides, so as to extend over and. about the upper parts, and the ends of the wheel-journals supported in bcarngsar ranged outside ofthe wheel-chamber, andv at the sides of the box.

In carrying out my present improvement, I dispense with such journal-caps, andl the particular arrangement of them as mentioned, and I- arrange the wheel-bearings and journals, and the abntments thereor?, wholly within the wheel-chamber of the box, and cover the wheels, their journals and bearings, and the whole wheel-chamber, by anvarched or other propershaped cover, made` to extend over the whole of the top of the latter, and hinged to the oil-reservoir of the box.

In the drawings- A denotes the oil-reservoir or receptacle, and B its cover, the two being provided with semicircular notches x y, at their middles, to admit a grindstone-journal to extend laterally through thebox, and between, and rest upon the peripheries of the two friction-wheels C These wheels, with their journals d ,-ar'e arranged wholly within the oil-cistern or chamber b, of the box, and their bearings c c are fixed or cast upon the inner opposite sides of such chamber, such sides serving also as abutments for the outer ends ofthe journals.

By having the journal-boxes within the wheel-chamber, so as to be covered by the cap or cover thereof, I avoid the necessity of caps to them, such as are' used in my patented box, and which are liable to bec`ome broken ofi the cover. Besides I very much better protect the Vwheel-journals from the sand and grit which may be discharged from the wheel; and what is better, I eliect a saving of oil, which, with my other box, is liable to waste ont of the bearings of the journals, and rundown on the outer sideslof the box. l

I herein make no claim to the broad principle of makinga grindstone-journal box with two bearingwheels and an 'oil-reservoir, with the journal-bearings of the wheels formed on the sides of the reservoir.

Nor do I claim arranging the j ournal-bearings out side of the box, and providing the cover with chambered caps or projections, to extend over such bearings and the journals, and lap on the ends of the latter, so as to constitute protections and abntments therefor; this latter 'mode of making a grindstone-jonrnal box being described in and covered by my said patent.

What I claim as my present invention, is-

lThe improved manufacture or grindstone-jonrnal box, as made 4with the friction-wheel bearings and journals, andl jonrnal-abutments, arranged wholly within the oil-receptacle, and with the bearings projecting inward from its opposite sides, in combination with the cover, arranged and constructed so as, when shut down upon the oil-receptacle, it shall close it, and extend over the wheels, their bearings, journals, and journ-al-abntments, in manner substantially as above described, and as represented in the accompanying drawings.

Witnesses: T. W. BROWN.

R. H. EDDY, S. N l PIPER. 

